package chapter04.example06;
// 定义Animal类
class Animal {
    private String name;
    private int age;
    public Animal (String name,int age) {
        this.name = name;
        this.age = age;
    }
    public String getName (){
        return  name;
    }
    public void setName (String name) {
        this.name = name;
    }
    public int getAge (){
        return age;
    }
    public void setAge (int age) {
        this.age = age;
    }
    public String info() {
        return "名称:"+this.getName()+",年龄:"+this.getAge();
    }
}
// 定义Dog类继承Animal类
class Dog extends Animal {
    private String color;
    public Dog (String name,int age,String color) {
        super(name,age);
        this.setColor (color);
    }
    public String getColor(){
        return color;
    }
    public void setColor(String color) {
        this.color = color;
    }
    //重写父类info（）方法
    public String info() {
        return super.info()+"，颜色："+this.getColor();//扩充父类中的方法
    }
}
// 定义测试类
public class example06 {
    public static void main(String[] args) {
        Dog dog = new Dog("牧羊犬",3,"黑色");//创建Dog类的实例对象
        System.out.println(dog.info());
    }
}
